Chain.



0.1. McGowAm CHAIN.

APPLICATION man SEPT. 22, 1917.

l Patented 00t.1,1918.

W 1%. in., N m N b Y .w .W QTL. NQ T t: w n im Q v (mi a.

vanne.

. "ownnrncsowau, or isiooxtynginnwfycnkj To all wlw/m it may concern.'

Be it known that I, OWEN J. MoGowAiv, av citizen of'the'Uiiited States,-and aresident of Brooklyn, in the county of Kings" and State ofNew York, have invented certain new and useful Improvements in Chains,of which the following is a specification. A

This invention relates to a chain of novel construction, which is ofsuperior strength, requires neither riveting nor welding and may bereadily assembled.

In the accompanying drawing:

Figure 1 is a side view of a chain embodying my invention, showing thelinks assembled and prior-to interlocking;

Fig. 2, a longitudinal section on line 2-2 Fig. 1;

Fig. 3, a longitudinal section through the joint prior to expansion;

Fig. 4, a similar section subsequent to expansion, and

Fig. 5, a perspective view of one of the links.

All the links 1 of the chain are of like construction, and are shown toconsist of a fiat bar. having concaved longitudinal edges, though thelink may be different contour if desired.

The thickness of the link is reduced at both of its ends, but onopposite faces, so as to form an eye or circular projection'2 on one endwhich is iiush with one of said faces, and a similar eye or circularprojection 3 on the other end, which is flush with the other face.

Back of eye 2, there is formed on link 1, a concave shoulder 4, whichhas the same radius as the eye, and is consequently concentric to theaperture 5 of the latter, said aperture having a beveled wall 6. Infront of eye 3, there is formed a similar concave shoulder 7, which hasthe same radius as the eye, and is concentric to the aperture 8 of thelatter, the two shoulders 4.and 7, being, by the construction described,formed on opposite faces of the link.

From eye 3, there extends forwardly, a tubular hub 9, the bore of whichcoincides with that of the latter. The hub is adapted to be snuglyreceived within the aperture 5 of the adjoining link, the diameter ofwhich is consequently considerably greater than that of aperture 8." Theend of hub 9 should be slightly beveled toward its eye as indicated at10 (Fig. 3.)

I Appnqanonmea september 22.21917. semina 192.691.

- salame-aibn Queers raient.. Patented oetr, 191s.

link is projected over the hub 9 of the adthis way the two eyes 2 and 3of adjoining links will be placed into facewise contact, eye 2 engagingshoulder 7 of eye 3 while eye 3 engages shoulder 4 of eye 2. A taperingsolid punch or similar tool 11 is now driven into hub 9, by means ofwhich the latter will be expanded toward the tapering wall 6 of aperture5 (Fig. 4) and thus become joined therewith in such a manner, that whilethe links will become permanently interlocked, they will have a freepivotal movement around the axis of hub 9. By the expanding movementdescribed, the beveled end 10 of the hub will be so deiiected that itwill be brought into alinement with the face of the encompassing eye 2thus producing a neat finish.

It will be seen that the chain constructed as described, is devoid ofall pintles or solder joints and that the links may be assembled in asimple and reliable manner. Moreover, should the joints become undulyloose through wear, they may be readily tightened up, by a newapplication of the punch.

I claim:

1. A chain link having eyes on opposite ends, said eyes projecting fromopposite faces of said link, and an expanded tubular hub extending fromone of said eyes.

2. A chain link having eyes on opposite ends thereof, said eyesprojecting from opposite faces of said link, shoulders concentric tosaid eyes, and an expanded tubular hub extending from one of said eyes.

3. A chain formed of a plurality of links, each link having an eye oneach of its ends, one of said eyes having an expanded hub, while theother eye is beveled, the expanded hub of one link being adapted tointerlock with the beveled eye of the adjoining link.

4. A chain formed of a plurality of links, each link having an eye oneach of its' ends, said eyes projecting from opposite faces of the link,and an expanded hub extending from one of said eyes, while the other eyeis beveled, the beveled eye of any one link interlocking with theexpanded hub of the adjoining link. l

5. A chain formed of a plurality of links, each link having eyes onopposite ends thereof, said eyes projecting from opposite faces of saidlink, shoulders concentric to said l l In'. assemblingthe parts, the.leye .2 .ofoile eyes, an expanded hub extendingiroin one vtion et 'theother end, said 'eyes extending V,of said eyes, While the other eyeis'bevele'd, '"frorn opposite faces of said link, shoulders the beveledeye of'enyonelinkbeingin ffeoncentr-ieto-safid'eyes, and an expanded hubacewise Contact with the eye of the k,dextending from the eye having therela- 5 joining link, and interlocking with theeX- "tively smallerperforation, the eyes of ad- 15 pandedhu'b .ofsaid adjoining link. ljoining -links being in facewise Contact 426. lAblminTormedof aplurality'of links, iyhile'Jlie beveled perforationhoffa'ny -one eachlink having anweyewwithafrelatively -link.-isrenga,ged @by the expandedhub of large andbeveled perforation at one end, the adjoining link.iOu-amdlan eye with k-a'reln-ti-velyf small: perfora- OViEN-J. MGGOWAN.

